When to plant in Forest Hill, TX
USDA Zone 8bForest Hill, Texas frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
A generous ~257-day season lets Forest Hill gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. These dates come from a station roughly 16 km away, the closest with full normals; terrain around Forest Hill (elevation, water, pavement) can move your real frost dates a few days either way. Zone 8b means many perennials and even some tender shrubs overwinter in Forest Hill, while your frost dates still decide when annuals go out.
Frost probability
ARLINGTON MUNI AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Forest Hill’s own odds, recorded at ARLINGTON MUNI AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 15 | Mar 24 | Mar 3 | Oct 22 | Nov 8 | Nov 26 |
| 32°F | Mar 28 | Mar 9 | Feb 18 | Nov 3 | Nov 21 | Dec 7 |
| 28°F | Mar 14 | Feb 25 | Jan 29 | Nov 14 | Dec 4 | Dec 30 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Forest Hill, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 19 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Forest Hill planting FAQ
When is the last spring frost in Forest Hill, TX?
Forest Hill's average last spring frost falls near March 9 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Forest Hill, TX?
Expect Forest Hill's first fall frost near November 21 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Forest Hill in?
Forest Hill is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Forest Hill?
There are roughly 257 frost-free days in Forest Hill (a long growing season), running from the average last frost around March 9 to the first fall frost near November 21.
When should I plant tomatoes in Forest Hill?
In Forest Hill, start tomato seeds indoors around January 12–January 26, then transplant seedlings outdoors around March 16 once the danger of frost has passed.
Never miss a window in Forest Hill
An email when it’s time to start seeds, transplant, and sow — timed to Forest Hill’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Rendon · 10 km
- Crowley · 13 km
- Arlington · 14 km
- Fort Worth · 15 km
- Mansfield · 17 km
- Burleson · 17 km
- Haltom City · 17 km
- Benbrook · 19 km
Frost dates recorded at ARLINGTON MUNI AP, 16 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Forest Hill, TX — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00053907. Retrieved from https://blissgarden.com/texas/forest-hill.